The Humane Society is trying to get Petland to stop supporting puppy mills. You can participate here:
https://community.hsus.org/campaign/US_2008_petland Seriously.... what would be so bad about selling puppies & dogs from the pounds and whatnot?* Don't other pet stores do that?
*with adequate ownership screening
ETA: Also, read this, it's Petland's response:
http://www.petland.com/PetlandInformation/HSUS.htm You can make your own decision based on these two arguments. I feel stupid for posting this... oh well.
But, petland's info about HSUS comes from consumerfreedom.com which is owned by the totally smarmy Rick Berman.
(Sorry, this is a totally messy post! I just felt bad for the puppies! I didn't realize how weird the situation is.)